Uniform Stealing Board

The heroines are on a space shuttle flight undercover, trying to find some hijackers. When one of the ladies suggests going undercover as flight attendants, the girls immediately attack and overpower the real flight attendants and take their uniforms and places.

https://gogoanime.lol/galaxy-angel-x-episode-11

Scene begins at 2:41, and there's later a brief shot of some of the real flight attendants bound and gagged in sacks at 7:23.

This is a scene I remember fondly. Thanks for finding it again.